LTO45120 2.4V 5mAh Rechargeable Cell 25000 Cycles -40°C to 100°C 20C Rate

The LTO45120 is a 2.4V 5mAh rechargeable lithium titanate (LTO) cell designed for applications requiring ultra long cycle life, wide operating temperature, and compact size. With a typical capacity of 5mAh and the ability to operate from -40°C to +100°C, it outperforms standard batteries in harsh environments. The cell supports up to 20C charge and discharge currents (100mA), making it suitable for high pulse applications. After 25,000 cycles, it retains over 80% of initial capacity.

Core Specifications
Typical capacity is 5mAh with a tolerance of -20% to +20%. Nominal voltage is 2.4V. Internal impedance is ≤800mΩ measured at AC 1kHz after standard charge. Charge cut off voltage is 2.8V. Discharge cut off voltage is 1.8V. Standard charge and discharge current is 5mA (1C). Maximum charge and discharge current is 100mA (20C). Operating temperature range is -40°C to +100°C. Storage temperature range is -20°C to +70°C.

Physical Dimensions
Diameter ΦD is 4.4±0.1mm. Length L1 is 12.0±0.5mm. Lead length L2 is 17.5±1.0mm and L3 is 14±1.0mm. Lead diameter Φd is 0.45±0.05mm. Lead pitch F is 1.6±0.2mm. The cell has a cylindrical pin type form factor.

Cycle Life
Under standard test conditions, the cell retains ≥80% of initial capacity after 25,000 cycles. This extraordinary cycle life makes it ideal for applications that require frequent charge and discharge over many years.

Temperature Performance
At -40°C, the cell can discharge at 0.2C or 1C to 1.8V with reduced capacity. At 100°C, capacity retention is ≥90% of initial value. High temperature storage at 70°C for 28 days results in retention capacity >50% and recovery capacity >80%.

Safety and Reliability
The cell passes overcharge testing (3C to 4.2V for 2 hours) with no fire, explosion, smoke, or leakage. Short circuit testing with <50mΩ resistance results in no fire or explosion. Impact testing with a 10kg weight dropped from 1m causes no fire or explosion (distortion allowed). Over discharge testing (discharge through 30Ω resistor for 28 hours) causes no fire, explosion, smoke, or leakage. Vibration and drop tests also pass.

Applications
This tiny 5mAh LTO cell is ideal for IoT sensors, wearable devices, medical patches, wireless communication modules, memory backup, real time clocks, Bluetooth beacons, and portable electronics requiring long life and wide temperature tolerance.